package com.hanyao.reggie.controller;

import com.hanyao.reggie.common.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.UUID;

/**
 * @author 寒钥
 * @version 1.0
 */
@RestController
@RequestMapping("/common")
@Slf4j
public class CommonController {

    @Value("${reggie.filePath}")
    private String filePath;

    @PostMapping("/upload")
    public R<String> upload(MultipartFile file){
        String originalFilename = file.getOriginalFilename();
        String suffix = originalFilename.substring(originalFilename.lastIndexOf("."));
        String fileName = UUID.randomUUID().toString()+suffix;
        File dir = new File(filePath);
        if(!dir.exists()){
            dir.mkdirs();
        }
        try {
            file.transferTo(new File(filePath+fileName));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return R.success(fileName);
    }

    @GetMapping("/download")
    public void download(String name, HttpServletResponse response){
        try {
            ServletOutputStream outputStream = response.getOutputStream();
            FileInputStream fileInputStream = new FileInputStream(new File(filePath + name));
            byte[] bytes = new byte[1024];
            log.info("name={}",name);
            response.setContentType("image/jpeg");
            int len = 0;
            while(fileInputStream.read(bytes)!=-1){
                outputStream.write(bytes);
                outputStream.flush();
            }
            outputStream.close();
            fileInputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}
